Formed Strip Brush | Spiral Forms
Application Engineering:800 787 7325
Products
Inverted and external spirals are available both right-hand and left-hand wound, in a wide variety of synthetic (including conductive), metal, and natural filaments and in a full range of pitches. Channel sizes include A, B, C, D, F, G and K and are available in galvanized and stainless steels. Minimum outside diameter (OD) and inside diameter (ID) depend on channel size and channel material as shown below.
Mandrels for external spiral brushes can be made to your specifications, including: solid or tubular construction, keyway or threaded mounting, welded or clip-mounted brush.
If your application requires a spiral with diameter less than those shown, contact a SEALEZE® Sales Representative for more information.
External Spiral

| Channel Section Size | |||
| Section Size | (X) Width (inches) | (Y) Height (inches) | ![]() |
| A | 0.095 | 0.110 | |
| B | 0.150 | 0.152 | |
| C | 0.180 | 0.199 | |
| D | 0.240 | 0.256 | |
| F | 0.313 | 0.313 | |
| G | 0.350 | 0.370 | |
| K | 0.500 | 0.500 | |
| MINIMUM ID (inches) FOR EXTERNAL SPIRALS | ||||
|---|---|---|---|---|
| Section | Product Code* | Galvanized Channel | Stainless Channel | Stainless Filament |
| A | ESA1 | 0.188 | 1.000 | 1.750 |
| B | ESB1 | 0.250 | 1.000 | 1.750 |
| C | ESC1 | 0.500 | 1.000 | 2.250 |
| D | ESD1 | 0.750 | 1.750 | 2.440 |
| F | ESF1 | 1.000 | 1.750 | 2.500 |
| G | ESG1 | 1.000 | 1.750 | 2.500 |
| K | ESK1 | 1.500 | 2.625 | 3.500 |
| *T-304 S/S Channel change "1" to "2". T-316L Channel change "1" to "6". | ||||

| Channel Section Size | |||
| Section Size | (X) Width (inches) | (Y) Height (inches) | ![]() |
| A | 0.095 | 0.110 | |
| B | 0.150 | 0.152 | |
| C | 0.180 | 0.199 | |
| D | 0.256 | 0.256 | |
| F | 0.313 | 0.313 | |
| G | 0.350 | 0.370 | |
| K | 0.500 | 0.500 | |
| MINIMUM OD (inches) FOR INVERTED SPIRALS | ||||
|---|---|---|---|---|
| Section | Product Code* | Galvanized Channel | Stainless Channel | Stainless Filament |
| A | ISA1 | 0.625 | 1.000 | 1.250 |
| B | ISB1 | 1.312 | 2.500 | 2.500 |
| C | ISC1 | 2.187 | 3.750 | 4.250 |
| D | ISD1 | 2.850 | 4.250 | 4.750 |
| F | ISF1 | 3.500 | 5.250 | 5.750 |
| G | ISG1 | 4.000 | 6.000 | 6.500 |
| K | ISK1 | 8.000 | 10.000 | 14.000 |
| *T-304 S/S Channel change "1" to "2". T-316L Channel change "1" to "6". | ||||




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